Fixes #11: Install emulator package in createEmulator

docs/README.md

@@ -22,6 +22,7 @@ andromatic
 - [getAndroidDevToolPath](README.md#getandroiddevtoolpath)
 - [installAndroidDevTool](README.md#installandroiddevtool)
 - [installPackages](README.md#installpackages)
+- [isInstalled](README.md#isinstalled)
 - [listPackages](README.md#listpackages)
 - [runAndroidDevTool](README.md#runandroiddevtool)
 - [updatePackages](README.md#updatepackages)
@@ -377,7 +378,7 @@ The path to the installed tool's executable.
 
 #### Defined in
 
-[index.ts:340](https://github.com/tweaselORG/andromatic/blob/main/src/index.ts#L340)
+[index.ts:357](https://github.com/tweaselORG/andromatic/blob/main/src/index.ts#L357)
 
 ___
 
@@ -406,7 +407,7 @@ The path to the installed tool's executable.
 
 #### Defined in
 
-[index.ts:293](https://github.com/tweaselORG/andromatic/blob/main/src/index.ts#L293)
+[index.ts:310](https://github.com/tweaselORG/andromatic/blob/main/src/index.ts#L310)
 
 ___
 
@@ -431,15 +432,47 @@ The path to `$ANDROID_HOME` where the packages are installed.
 
 #### Defined in
 
-[index.ts:266](https://github.com/tweaselORG/andromatic/blob/main/src/index.ts#L266)
+[index.ts:283](https://github.com/tweaselORG/andromatic/blob/main/src/index.ts#L283)
+
+___
+
+### isInstalled
+
+▸ **isInstalled**(`packageName`, `version?`): `Promise`<`boolean`\>
+
+Checks whether a package has been installed by `sdkmanager`.
+
+#### Parameters
+
+| Name | Type | Description |
+| :------ | :------ | :------ |
+| `packageName` | `string` | Name of the package to check. Should match the `sdkmanager` package path. |
+| `version?` | `string` | If needed, additional check if the specified version ist installed. |
+
+#### Returns
+
+`Promise`<`boolean`\>
+
+A boolean which is true if the package is currently installed.
+
+#### Defined in
+
+[index.ts:270](https://github.com/tweaselORG/andromatic/blob/main/src/index.ts#L270)
 
 ___
 
 ### listPackages
 
-▸ **listPackages**(): `Promise`<[`AvailablePackage`](README.md#availablepackage)[]\>
+▸ **listPackages**(`options?`): `Promise`<[`AvailablePackage`](README.md#availablepackage)[]\>
 
-Fetch a list of available packages that can be installed by `sdkmanager`.
+Fetch a list of available or installed packages that can be or have been installed by `sdkmanager`.
+
+#### Parameters
+
+| Name | Type | Description |
+| :------ | :------ | :------ |
+| `options?` | `Object` | If `ìnstalled` is true, fetch a list of all installed packages (instead of ones available for install). |
+| `options.installed` | `boolean` | - |
 
 #### Returns
 
@@ -449,7 +482,7 @@ An array of packages, each with their package path, version and description.
 
 #### Defined in
 
-[index.ts:237](https://github.com/tweaselORG/andromatic/blob/main/src/index.ts#L237)
+[index.ts:239](https://github.com/tweaselORG/andromatic/blob/main/src/index.ts#L239)
 
 ___
 
@@ -479,7 +512,7 @@ The result from execa, see: https://github.com/sindresorhus/execa#childprocess.
 
 #### Defined in
 
-[index.ts:409](https://github.com/tweaselORG/andromatic/blob/main/src/index.ts#L409)
+[index.ts:426](https://github.com/tweaselORG/andromatic/blob/main/src/index.ts#L426)
 
 ___
 
@@ -495,4 +528,4 @@ Update all installed packages to the latest version using `sdkmanager`.
 
 #### Defined in
 
-[index.ts:275](https://github.com/tweaselORG/andromatic/blob/main/src/index.ts#L275)
+[index.ts:292](https://github.com/tweaselORG/andromatic/blob/main/src/index.ts#L292)

src/emulator.ts

@@ -94,6 +94,9 @@ export const createEmulator = async (name: string, options: EmulatorOptions) =>
     for (const dir of ['platforms', 'platform-tools'])
         if (!(await fs.pathExists(join(androidHome, dir)))) await fs.ensureDir(join(androidHome, dir));
 
+    // The `emulator` package is required by avdmanager, so we need to check for it
+    if (!(await fs.pathExists(join(androidHome, 'emulator')))) await installPackages('emulator');
+
     await runAndroidDevTool('avdmanager', [
         'create',
         'avd',

src/index.ts

@@ -230,14 +230,16 @@ export type AvailablePackage = {
     description: string;
 };
 /**
- * Fetch a list of available packages that can be installed by `sdkmanager`.
+ * Fetch a list of available or installed packages that can be or have been installed by `sdkmanager`.
  *
+ * @param options If `ìnstalled` is true, fetch a list of all installed packages (instead of ones available for
+ *   install). Defaults to `false`.
  * @returns An array of packages, each with their package path, version and description.
  */
-export const listPackages = async (): Promise<AvailablePackage[]> => {
+export const listPackages = async (options?: { installed: boolean }): Promise<AvailablePackage[]> => {
     const { sdkmanager, env } = await ensureSdkmanager();
 
-    const { stdout } = await execa(sdkmanager, ['--list'], { env });
+    const { stdout } = await execa(sdkmanager, [options?.installed ? '--list_installed' : '--list'], { env });
 
     const lines = stdout.split('\n');
     /*
@@ -246,15 +248,30 @@ export const listPackages = async (): Promise<AvailablePackage[]> => {
     -------                              | -------      | -------
     add-ons;addon-google_apis-google-15  | 3            | Google APIs
     */
-    const availableHeaderIndex = lines.findIndex((line) => line.startsWith('Available Packages:'));
+    const headerIndex = lines.findIndex((line) =>
+        line.startsWith(options?.installed ? 'Installed packages:' : 'Available Packages:')
+    );
 
     return lines
-        .slice(availableHeaderIndex + 3)
+        .slice(headerIndex + 3)
         .map((line) => line.split('|').map((v) => v.trim()))
         .map(([path, version, description]) => ({ path, version, description }))
         .filter((p): p is AvailablePackage => !!p.path && !!p.version && !!p.description);
 };
 
+/**
+ * Checks whether a package has been installed by `sdkmanager`.
+ *
+ * @param packageName Name of the package to check. Should match the `sdkmanager` package path.
+ * @param version If needed, additional check if the specified version ist installed.
+ *
+ * @returns A boolean which is true if the package is currently installed.
+ */
+export const isInstalled = async (packageName: string, version?: string) =>
+    (await listPackages({ installed: true })).some(
+        (p) => p.path.startsWith(packageName) && (version ? p.version === version : true)
+    );
+
 /**
  * Install one or more packages using `sdkmanager`. The specified packages are installed or updated to the latest
  * version (if already installed) in an automatically created `$ANDROID_HOME` managed by andromatic.